10 Plane Geometry (Circles) (1) - Mathematics(HKCEE M.C 14 Plane Geometry I Circles(1997Q18 Plane Geometry(Circle In the figure BCA is a semicircle If

10 Plane Geometry (Circles) (1) - Mathematics(HKCEE M.C 14...

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Mathematics Mathematics (HKCEE (HKCEE M.C.) M.C.) 14 Plane Geometry I 14 Plane Geometry I – Circles Circles (1997Q18) Plane Geometry (Circle) In the figure, BCA is a semicircle. If AC = 6 and 4 CB , find the area of the semicircle. A. 2 5 B. 2 13 C. 10 D. 13 E. 26 (1997Q20) Plane Geometry (Circle) In the figure, EC is the tangent to the circle at C . Find CBD . A. 40 B. 50 C. 65 D. 70 E. 75 (1997Q50) Plane Geometry (Circle) In the figure, AC is the angle bisector of BAD . Which of the following statements must be true? I. BCE ~ ADE II. ABC ~ AED III. ABC ~ BDA A. I only B. I and II only C. I and III only D. II and III only E. I, II and III Mathematics / HKCEE M.C. / 14 Plane Geometry (Circles) / P.1 A B C A B E D C A B C D E 65 40
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(1997Q51) Plane Geometry (Circle) In the figure, 2 AB , 3 BC , 4 CD and 6 DA . Find BCD . A. 72 B. 84 C. 90 D. 96 E. 144 (1998Q28) Plane Geometry (Circle) In the figure, AB is a diameter of the circle and ABD is a straight line. CBD = A. 2 . B. 4 . C. 90 + . D. 180 . E. 180 – 2 . (1998Q29) Plane Geometry (Circle) In the figure, AD is a diameter of the circle. If AB : BC : CD = 3 : 5 : 7, then ADC = A. 36 B. 45 C. 48 D. 49 E. 72 (1998Q49) Plane Geometry (Circle) In the figure, CE is tangent to the circle at C . Find DCE . A. 40 B. 42 C. 49 D. 54 E. 78 Mathematics / HKCEE M.C. / 14 Plane Geometry (Circles) / P.2 B A D C A D B C 41 48 37 A B C D E B C A D 6 2 3 4
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(1999Q26) Plane Geometry (Circle) In the figure, O is the center of the circle. Find x . A. 12 B. 20 C. 24 D. 40 E. 60 (1999Q27) Plane Geometry (Circle) In the figure, AB is a diameter of the circle. Find x . A. 26 B. 32 C. 38 D. 52 E. 64 (1999Q50) Plane Geometry (Circle) In the figure, AT is tangent to the circle at T and ABC is a straight line. Find AT . A. 9 cm B. 12 cm C. 15 cm D. 16 cm E. 20 cm Mathematics / HKCEE M.C. / 14 Plane Geometry (Circles) / P.3 4 x x + 60 O 26 x A B D C A B C T 16 cm 9 cm
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(2000Q20) Plane Geometry (Circle) In the figure, O is the center of the circle. EAOB and EDC are straight lines. Find x .
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  • Spring '17
  • HKCEE

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